Edwin Gonzalez fought back tears as he spoke about a son who was killed in a roadside blast in Afghanistan last Friday, saying he was a "good person, a good son, a good friend, everything."

Displaying photographs and speaking with his two other sons beside him, Gonzalez told CBS4's Peter D'Oench that his 21-year-old son, Edwin, lost his life when an improvised explosive device detonated in the Helmand province in southern Afghanistan.

He was killed along with three other NATO service members. Gonzalez had been in the Navy for three years, was married and was assigned to the 2nd Marine Division, fleet marine forces, Atlantic, at Camp Lejeune, N.C.

"I was very proud and honored to have him as a son," said the sailor's father. "He was an example to everyone his age." He said his son was a medic who had hoped to one day become a doctor.

He said his son was devoted to the military and had been part of the Junior Reserve Officers Training Corps at Michael J. Krop Senior High School in North Miami Beach.

"My brother meant everything to me," said Eric Gonzalez, 26. "My brother's my life. There's a part of me that's not going to come back. My brother used to always honor Superman. He had a Superman tattoo on his chest. And he would do anything he could to help you and to save you."

"I'm mad," said Oscar Gonzalez, 31. "I'm still trying to accept the fact that he's gone. He was my baby brother."

Gonzalez actually almost died in an accident when he was just two years old.

"I'm just happy that God gave him a second chance," said Gonzalez's father.

Before he went to Afghanistan, Gonzalez married his girlfriend, Neshme Bazan. She also is in the military and is stationed in Germany.

Gonzalez was killed in a region that has seen a surge in fighting since NATO and Afghan forces started a special operation in September that was aimed at targeting militant strongholds and destroying them.

More than 2,000 NATO service members have been killed in Afghanistan since 2001.

"I'm mad about the loss," said Oscar Gonzalez. "I'm mad about Afghanistan. I mad at how everything is turning out."

"I would love for the world to have peace and for the war to stop," said Gonzalez's father. "It's not fair that someone like my brother, who was such a good person, for his life to end like this."

But he said his is able to accept this terrible loss.

"And I am content that he lived his life and honored everyone," said Gonzalez's father.

Eric Gonzalez told D'Oench that he had received only limited information as to how his brother was killed.

It's not known when Edwin Gonzalez's body will be brought back to South Florida. Funeral arrangements are incomplete.